A limousine speeding down a hill hit bystanders on Saturday afternoon at the Apple Barrel Country Store in Schoharie, about 270 kilometres north of New York City, local officials told the Times Union of Albany.

State police on Sunday confirmed the death toll and said the crash involved two vehicles.

The store is a popular stop for tourists on autumn foliage trips.

Customers in the car park were killed when they were hit by the limousine coming down a hill at "probably over 60 mph", (96km/h) the store manager, Jessica Kirby, told The New York Times.